Hmmm, maybe you could put two 0.22uF caps in series, or two 0.047uF caps in parallel. That could get you close.

Of course, if those 0.1uF caps are only being used for decoupling (are they connected from Vcc to ground?) then you could chuck the same type capacitor of a larger value (0.15, 0.22) and it should be fine.

Those kind of capacitors are usually used to bypass ICs, anything else near that value will do as well.But if its a part of a tank circuit section, the instructions would surely ask you to measure them because the run of the board 0.1uF capacitor will vary +-20% and that would play ( not well ) with FM.So we are back to bypass caps.Your stats say you are nice person, if you are near Reno Ill give you a hand full of o.1uF caps.

If you want to do a one-for-one replacement, then the answer is probably "no." It depends on the details of the circuit -- are the caps being used to provide a time constant, or to set a matched impedance, or just to do AC/ripple filtering?

If you have a supply of caps, then you can combine multiple capacitors to get an effective capacitance, just as you can combine resistors. The rules for caps are the opposite of resistors:

In series: 1/Ctot = 1/C1 + 1/C2 + ...

In parallel: Ctot = C1 + C2 + ...

You can play around with arithmetic (or set up an Excel spreadsheet) and find some combination of the caps you have on hand to get a net 0.1µF.